Re: Modem device file not accessible.

Never give any file or directory 777 permission until you understn=and what it means. A device file is not a program or a script so it should never have the execute bits set. The normal setting is always 666 or crw-rw-rw. But note that it will probably be changed by the program you are using to talk to the modem. If you don't terminate the program correctly, it may leave the device file with bad permission such as your 622 setting. Just change the permission back to 666 if necessary when the modem is not being used.